Impboyement in machines foe making nuts



A. B. BEAN. MAGHINE FORMAKING NUTS.

No. 62,923. Patented Mar. 19, 1867..

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T0 ALL WHOM'IT MAY CONCERN:

Be it known that I, ALBERT B. BEAN, of New Haven, in the county of New Haven, and State of Connecticut, have invented a new Improvement in NutMachines; land I'do hereby Vdeclare the following, when taken in. connectionwith the 'accompanying drawings, andthe letters of lreference marked thereon,- to be a full, clear, and exact description of the same, and 4whichlsaid drawings constitute part of this specification, and represent, inv A Figure 1, a side view.

Figure 2, a top view.

Figure 3, a. longitudinal horizontal central sectiii; and in Figure 4, av portion 4of the same section to illustrato the operation of the machine.

This invention relates to an improvement in machines for the manufacture of mctal'nuts or suchnsare used for bolts, die., fromhotfmetal; and that others may he.enabld to construct and use my improvement, I' will proceed to describe'thesame as illustrated in the accompanying drawings. v I

A is the bed-plate, supported upon legs B or otherwise. B the driving-shaft supported-and vso as to be revolved freely in bearings C by the application of power to the pulley D.' From the said shaft B, power is communicated to thc'caln-shaft E through gear-wheels F and Gr, the said shaft E supported and revolving in bearings H. Ivis'a slide moving freelyin guides J, by Vthe action of a ca m, K, bearing against the said slide to .force its-forward, as seen in fig. 3, and returned-by the reaction-cfa spring'denoted in broken lines d, iig. I, or otherwise the said slide I carrying the hollow punch L, which iszot: the size and-form required for' the nut to be produeed.- Mis a second slide lying backof the slide I, and moving'freely in guides N forward by the action of theca'm P, and returned by the reaction of the said'cam 'upon' the arm R attached to the said slide. At the forward end of the slide M is the die-holder S, in which is -xed a die, a, (see fig. 5,) adjusted to position by screws b, and through which the hollowjpunch freely passes. T is the crowner, of the same size as the punch L, irtedin a holder, U, so as to correspond in positionv to thc punch L, the said holder U being hinged to the frame atf, so that it may be turnedto the position denoted in red, g. 3, for the purpose hereafter shown. In the rear of the holder U is arranged a slide, W,'movin'g freely-in guides X forward by the action of the ca m Y, and return by the action ofthe cam lthroughthe rod Z and the levc'r g, as seen in iig. 3, carrying with it a punch, 1,', which passes through the crowner T, and corresponding to the hole in the punch L, and of the size.

required for the piercing of the nut. The said punch z'is thus moved from the position in iig. 3, to that denoted in red, g. 4, and returned, and is adjusted by e' setserew, h. I*

The operation of my machine is as follows: When in the position denoted in fig. 3, the metal ofwhich the nut is to be formed, after being properly heated, is. placed between v,the punch L and c1-owner T, as denoted in blue,`f1g. 3. Power being applied to'the machine forces the punch forward, pressing themctal between 4the two, as denoted -in blue, fig. 2; then 'the slide M advances, the die cutting olf the blank and following on to the crowner, as denoted in ig.. 4. In this position, and while the punch and die lare at rest, the piercing punch c' is advanced, `forcing the central' portion of ,the metal into thc hollow of the punch L, which completes the blanlc; thenby thel return ofthe several parts the nut is forced. from the -die and from the piercing punch, so`that by no possibility' 'can the nut cling'to' any of the parts, butmust necessarily drop from the machine. A A second blank isinf'like manncrintroduced, the. second piercing following the first` into the punch L, from thence passing out throughthe hollow of the punch or otherwisedisp'osed of.

It is often necessary to repair -to a greater or less extent the dies, the crowner, orV the punch, and which repair, if it were lpossible to get at the parts in the machine, could be much better done 'than to remove them from the machine.' T o attain this lobject the holder U is hinged tothe frame, as before described; it is secured to the frame by screwsln, bythe removal of which, 'and thewithdrawal ofA the piercing punch, the holder may beV turned to the position denotedjin red, g.'3,.thus enabling the worl'tman'to get at the several parts:

Without 'removal or disarra-ngement, one great advantage which'my improvement has over machines heretofore consti-noted. I

Another advantage arises from the fact that thc piercing is done while all the partsexcept the piercing punch :ire at rest, whereby any virregularity or defects in the surface of thenut are filled, and the nut comes from the machine more perfect thnn'can be done in machines which pierce the nut in its earlier stages, or while it is b eing moved in the die. A

Another advantage which my machine has over others, misesfrom` the fact thatV thethi'okness of the nut is governed by the movement of the pnch L, andes this completes its movement before the die erlvanees, ull sur? plus metalv is cut awayand does not eli-telf Vthe die, whereas, inother machinesl the metal is forced into the die vbefore it is compressed, and thus, as the quentityof motul varies, so must the pressure and the strain of'l the machine more or less inc rense. e

I do not wsh to be understoodas claiming the forcing ofthe metal into the body of the mit bythe piercing' y punch, as such is not new; neithei` do I entirely thus force the inoml, only such portions of it as will fill the die.' Having therefore thus fully dcscibedmy invention, whut I do claim as new' und useful, and .desire to-secure by vLetters Patent, isv v i y' The crownerr T, in combination with the punch L, and die A, and hinged holder U,`substuntial1y as and for the purpose set forth. Y

ALBERT B. BEAN.

Witnesses:

JonN E. EARLE, ALTsIE J. 'lmns 

